Title: Oil seal apparatus

Abstract: An oil seal apparatus, particularly for use with a vehicle engine, wherein an oil seal coacts between a stationary casing and a rotatable shaft which projects through the casing. The oil seal apparatus includes an annular elastomeric seal member having a pair of axially spaced annular lip portions disposed for engagement with the shaft. One lip portion is positioned innermost for creating an oil seal, and the other lip portion is positioned outermost for creating a dust seal. This other lip portion is provided with a auxiliary annular lip which projects axially outwardly along the shaft. The auxiliary lip has an annular groove around its periphery to facilitate transfer of water around the seal member and prevent the water from flowing axially inwardly along the shaft past the dust seal.

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Inventors: Kawai, Yukio (Toyota, JP)
Adachi, Masaharu (Chiryu, JP)

Application Number: 784537
Filing Date: 1977-04-04
Publication_date: 1979-01-16
Assignee: Toyota Jidosha Kogyo Kabushiki Kaisha (Toyota, JP); Koyo Seiko Kabushiki Kaisha (Osaka, JP)
Primary Class(es): 277/568 123/41.47
Other Classes:
US Patent Ref:

2516191	Jul, 1950	Englesson	277/152.
2868574	Jan, 1959	Rich	277/164.
2992027	Jul, 1961	Wright et al.	277/58.
3099454	Jul, 1963	Walinski	277/152.
3455564	Jul, 1969	Dega	277/153.
3510138	May, 1970	Bowen et al.	277/153.
3531168	Sep, 1970	Bainard	277/153.
3713659	Jan, 1973	Derman et al.	277/95.
3917286	Nov, 1975	Loyd	277/153.

Other Refs: 47-15083

May, 1972	JP

Primary Examiner: Ward, Jr., Robert S.
Assistant Examiner:
Attorney: Blanchard, Flynn, Thiel, Boutell & Tanis